We've all seen how underwhelming this stat line is in practice. I thought lone champion looked pretty good when it got released and it's just not as good as it looks on paper due to the 2 att.

This card standalone is only worth about 3 mana so it really has to get carried by the magnetic tag. You want to attack this to a mech with reverse stats like a 3/2 mech or 4/3 mech, It's pretty bad on things like frame bot cause then u just make a pile of health with very little att. Overall if you use this as a buff it's probably a bit worse than Kings on average and Kings is like a 3/5, bearly playable sometimes (I personally don't like kings that much). This, however, does set up the legendary spell quite nicely.

A 2/4 minion with taunt is already a 3 mana value. Add Divine Shield and 4 mana makes this a Good value card. But being able to give those stats as a buff to an already established Mech card makes this a Very Good value card.

This card does have potential. The underlying text is more like "Choose a Mech and give it 2/4 with Divine Shield and Taunt". So the Divine shield can be used immediately on a mech that can attack and it gains health. The attack increase can also allow for some responsiveness.

Edit: Another way to look at it. It is like a modified version of Blessing of Kings . Lose the two attack in exchange for Taunt and Divine Shield, but only with mechs.